| abstract |
The invention belongs to the technical field of chemistry and chemical engineering, and discloses a method for preparing cationic hydrophobic associative polyacrylamide by a soap-free method. Allyl dimethyl isooctyl ammonium bromide, acrylic acid, acrylamide and distilled water are weighed ; Add acrylamide, acrylic acid, and allyl dimethyl isooctyl ammonium bromide to water in sequence to fully dissolve; after the dissolution is complete, adjust the pH value to 7-8; obtain hydrophobic association polyacrylamide. According to the percentage of mass fraction, allyl dimethyl isooctyl ammonium bromide:acrylamide:acrylic acid=0.5:74.5:25, the polymerization temperature is 45°C, the initiator content is 0.4%, and the total monomer content is 42% ; The critical association concentration is 0.3%wt%; The molecular weight of the polymer is 2.8938×10 6 . A hydrophobic associative polyacrylamide with good properties was obtained. |